TOOLS AND DATA
Glossary of Astronomy Terms
Bortle Dark-Sky Scale
Magnetic Declination at Your Location
Internet Speed Calculator
Jim Kaler's Star Page
G2V Stars
Visualization of the Stellar Neighborhood
SIMBAD Astronomical Database
Aladin Lite Sky Region Viewer
HyperLEDA Galaxy Database
Galactic Dust Reddening and Extinction
Mitchell Charity's "What color are the stars?"
Converting RA and DEC to ALT and AZ
Axel Mellinger's Milky Way Panorama
STScI Digitized Sky Survey Imagery
New World Atlas of Artificial Sky Brightness (Falchi)
World Atlas of Artificial Night Sky Brightness (Lorenz)
Calendar Converter
Telescope Optics Calculations
Astronomical Freeware, Shareware, and Commercial Software
Urania's Mirror
